Response of native and non-indigenous zooplankton to inherent system features and management in two Basque estuaries: A niche decomposition approach DOI Creative Commons
Ziortza Barroeta, Théo Garcia, Ibon Uriarte

et al.

Estuarine Coastal and Shelf Science, Journal Year: 2022, Volume and Issue: 272, P. 107878 - 107878

Published: April 29, 2022

The realized ecological niches of native zooplankton and non-indigenous species (NIS) were analysed in the contrasting estuaries Bilbao Urdaibai from 1998 to 2015 order study their responses particular features each estuary biotic abiotic changes along period. marginality tolerance taxa was estimated for two together using OMI analysis, whilst, by means WitOMI differentiated into spatial subniches assess differences between temporal determine variations time within estuary. niche overlap main NIS calculated with D-metric. Results showed that combined effect salinity gradients seasonal variations, linked temperature, defined spatio-temporal overall environmental scenario both estuaries. Thus, those factors separated winter-spring neritic, summer-autumn warm water affinity brackish limnetic species. Secondarily, river discharge hydrological stability accounted higher presence freshwater some tychoplanktonic organisms Urdaibai. At regional scale reflected a combination breadth difference abundance number not clearly explained variables studied Urdaibai, whilst new arriving occupied well better discrimination generalist specialist behaviours Bilbao. This related inherent estuary, which make more refractory settlement Moreover, Bilbao, several neritic experienced attributed improvement rehabilitation plans system impact arrived during In only small attributable limited inferred, since no meaningful conditions perceived.

Language: Английский

Seasonal and interannual variability of mesozooplankton in two contrasting estuaries of the Bay of Biscay: Relationship to environmental factors DOI
Fernando Villate, Arantza Iriarte, Ibon Uriarte

et al.

Journal of Sea Research, Journal Year: 2017, Volume and Issue: 130, P. 189 - 203

Published: May 9, 2017

Language: Английский

Citations

18
Differences in the colonization success and impact of non-indigenous and other expanding copepod species on the zooplankton of two contrasting estuaries of the Bay of Biscay DOI
Ziortza Barroeta, Fernando Villate, Ibon Uriarte

et al.

Biological Invasions, Journal Year: 2020, Volume and Issue: 22(11), P. 3239 - 3267

Published: Aug. 20, 2020

Language: Английский

Citations

12
Otolith shape and elemental signatures provide insights into the connectivity of euryhaline Chelon labrosus inhabiting two close estuaries with different burdens of xenoestrogens in the Southern Bay of Biscay DOI Creative Commons

Anthony Nzioka,

Ibon Cancio, Oihane Díaz de Cerio

et al.

Marine Environmental Research, Journal Year: 2023, Volume and Issue: 189, P. 106075 - 106075

Published: July 1, 2023

Intersex gonads have been observed in thicklip grey mullet Chelon labrosus, inhabiting estuaries with high burdens of xenoestrogens the Southeast Bay Biscay, but knowledge population connectivity among is lacking for this euryhaline fish species. This study investigates structure C. labrosus using otolith shape and elemental signatures 60 adults (overall length ∼ 38 cm) from two 21 nautic miles apart, one a incidence intersex condition (Gernika), other pristine (Plentzia). Otolith analyses were performed elliptical Fourier descriptors, while whole sagittae obtained by inductively coupled plasma mass spectrophotometry. Univariate multivariate statistics applied to determine if show patterns homogeneity between estuaries. The data indicated significant differences composition mullets Gernika Plentzia. Elemental mainly driven Sr, Li (both higher Plentzia) Ba (higher Gernika). 98% re-classification success rate stepwise linear discriminant function analysis suggests that Plentzia individuals form separated units. limited these close would indicate different life history exposure chemicals, which might explain prevalence its absence Plenztia.

Language: Английский

Citations

4
Response of the phytoplankton community to the cessation of wastewater discharges in the Urdaibai estuary (SE Bay of Biscay) based on PIGMENTUM analysis of HPLC pigments DOI Creative Commons
Jone Bilbao, Sergio Seoane

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 200, P. 106668 - 106668

Published: Aug. 3, 2024

Phytoplankton responds rapidly to nutrient availability variations, becoming a useful indicator for eutrophication and/or management actions reduce it. The present study evaluated the medium-term response of phytoplankton community temperate estuary (Urdaibai estuary) cessation discharges from wastewater treatment-plant (WWTP), comparing physicochemical conditions and before (2020) after (2022) sewerage works. led decrease ammonium phosphate, causing decreases biomass in outer middle increases surroundings WWTP. Community composition also changed, recording an increase prasinoxanthin-containing algae's contribution total biomass, shift inner estuary, mainly flagellates (alloxanthin-containing chlorophyll b-containing algae) diatoms, which could be prompted by change nutrient-ratios nitrogen source, might indicate recuperation system.

Language: Английский

Citations

1
Impact of Colonizer Copepods on Zooplankton Structure and Diversity in Contrasting Estuaries DOI Creative Commons
Ziortza Barroeta, Fernando Villate, Ibon Uriarte

et al.

Estuaries and Coasts, Journal Year: 2022, Volume and Issue: 45(8), P. 2592 - 2609

Published: July 21, 2022

Abstract The impact of the occurrence non-indigenous species (NIS) Acartia tonsa , Oithona davisae and Pseudodiaptomus marinus range-expanding copepods bifilosa Calanipeda aquaedulcis on structure diversity zooplankton communities was analyzed using 18 years (1998–2015) time series from contrasting estuaries Bilbao Urdaibai (Basque coast, Bay Biscay). Changes in were assessed by multivariate analyses taxa abundances changes descriptors alpha, beta, gamma diversity. most evident occurred at upper reaches estuary Bilbao, where an abundant less diverse brackish community, dominated NIS, A. O. succeeded a low abundance more community neritic origin. later establishment C. linked to further progressive increase seasonal pattern inner beta also significantly affected arrival NIS . In contrast, original Urdaibai, clearly far same copepod remained as best related habitats estuary.

Language: Английский

Citations

7
Immediate effect of sewerage improvement on the phytoplankton and physicochemical conditions in the Urdaibai estuary (southeastern Bay of Biscay) DOI Creative Commons
Jone Bilbao, Joana Larreta,

Javier Franco

et al.

Regional Studies in Marine Science, Journal Year: 2022, Volume and Issue: 56, P. 102707 - 102707

Published: Oct. 21, 2022

Anthropic nutrient enrichment has become a major environmental issue in estuaries around the world, being effluents of wastewater treatment plants (WWTPs) one main causes. Phytoplankton is, together with nutrients, useful indicator for ecological status assessment due to its basal position food chain. The present study aims evaluate immediate effect cessation discharges on conditions and phytoplankton community along eutrophicated Urdaibai estuary (southeastern Bay Biscay). Thus, short-term comparison physicochemical abundance composition (by pigment analysis microscopy) was carried out before after sewerage works. Results confirmed that had an estuary, mainly noticed inner part. abrupt decrease ammonium (from 72.3 18.2μmol/L) phosphate 3.5 2μmol/L) concentrations led improvement water status, reaching values lower than “good” threshold whole estuary. also showed reaction surroundings WWTP, chlorophyll b becoming dominant secondary area diversion rapid increase Eutreptiella sp. However, since sampling-period this did not exceed month cessation, longer study-period is necessary, including interannual studies, test real sanitation works

Language: Английский

Citations

7
Changes in hydrological, physical and chemical properties of water in closed/open coastal lakes due to hydrotechnical structures DOI Creative Commons
Roman Cieśliński

Oceanological and Hydrobiological Studies, Journal Year: 2018, Volume and Issue: 47(4), P. 345 - 358

Published: Dec. 1, 2018

Abstract The purpose of the study was to determine quantitative and qualitative changes in waters Lake Jamno northern Poland due presence new hydrotechnical structures its drainage basin, with a special focus on effects storm barrier. consisted primarily review measurement data, historical records fieldwork prior construction (2002–2008) following barrier (2015). Fieldwork included hydrographic surveys water sampling for laboratory analysis. main most easily discernible effect is change quality Jamno. This particularly true case key indicators related seawater, including conductivity, whose values changed from brackish fresh water.

Language: Английский

Citations

4
Response of native and non-indigenous zooplankton to inherent system features and management in two Basque estuaries: A niche decomposition approach DOI Creative Commons
Ziortza Barroeta, Théo Garcia, Ibon Uriarte

et al.

Estuarine Coastal and Shelf Science, Journal Year: 2022, Volume and Issue: 272, P. 107878 - 107878

Published: April 29, 2022

The realized ecological niches of native zooplankton and non-indigenous species (NIS) were analysed in the contrasting estuaries Bilbao Urdaibai from 1998 to 2015 order study their responses particular features each estuary biotic abiotic changes along period. marginality tolerance taxa was estimated for two together using OMI analysis, whilst, by means WitOMI differentiated into spatial subniches assess differences between temporal determine variations time within estuary. niche overlap main NIS calculated with D-metric. Results showed that combined effect salinity gradients seasonal variations, linked temperature, defined spatio-temporal overall environmental scenario both estuaries. Thus, those factors separated winter-spring neritic, summer-autumn warm water affinity brackish limnetic species. Secondarily, river discharge hydrological stability accounted higher presence freshwater some tychoplanktonic organisms Urdaibai. At regional scale reflected a combination breadth difference abundance number not clearly explained variables studied Urdaibai, whilst new arriving occupied well better discrimination generalist specialist behaviours Bilbao. This related inherent estuary, which make more refractory settlement Moreover, Bilbao, several neritic experienced attributed improvement rehabilitation plans system impact arrived during In only small attributable limited inferred, since no meaningful conditions perceived.

Language: Английский

Citations

3